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annotate src/video/windib/SDL_dibvideo.h @ 4355:9b464226e541 SDL-1.2

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Fixed bug #855 Ludwig Nussel 2009-10-18 06:31:52 PDT an mprotect call was added to fix bug 528. However that results in a buffer that allows writing and code execution. Ie the no-execute security features of modern operating systems are defeated this way. Two mprotect calls are needed. One to make the buffer executable but not writeable when done and another one to make the buffer writeable again if the content needs to be changed.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Oct 2009 17:31:37 +0000
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef _SDL_dibvideo_h
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25 #define _SDL_dibvideo_h
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26
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27 #define WIN32_LEAN_AND_MEAN
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28 #include <windows.h>
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29
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30
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31 /* Private display data */
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32 struct DibInfo {
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33 HBITMAP screen_bmp;
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34 HPALETTE screen_pal;
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35 LOGPALETTE *screen_logpal;
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36 BOOL grab_palette;
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37
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38 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */
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39 int SDL_nummodes[NUM_MODELISTS];
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40 SDL_Rect **SDL_modelist[NUM_MODELISTS];
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41
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42 #ifdef _WIN32_WCE
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43 int supportRotation; /* for Pocket PC devices */
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44 DWORD origRotation; /* for Pocket PC devices */
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45 #endif
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47 /* Screensaver settings */
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48 int allow_screensaver;
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49 };
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50 /* Old variable names */
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51 #define screen_bmp (this->hidden->dibInfo->screen_bmp)
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52 #define screen_pal (this->hidden->dibInfo->screen_pal)
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53 #define screen_logpal (this->hidden->dibInfo->screen_logpal)
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54 #define grab_palette (this->hidden->dibInfo->grab_palette)
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55 #define SDL_nummodes (this->hidden->dibInfo->SDL_nummodes)
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56 #define SDL_modelist (this->hidden->dibInfo->SDL_modelist)
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57 #define allow_screensaver (this->hidden->dibInfo->allow_screensaver)
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59 #endif /* _SDL_dibvideo_h */